# Apache Sling Engine vulnerabilities

Source: https://junglewise.ai/threats/technologies/sling-engine  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/sling-engine.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in Apache Sling Engine: 0 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-103866, was published on 5 November 2026. 3 vulnerabilities in the last four weeks, up from none in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 3
- Last 90 days: 3
- All time: 3 (0 critical, 0 exploited in the wild)

## About Apache Sling Engine

Sling Engine is a Java-based web framework for building web applications and RESTful services.

## Latest Apache Sling Engine vulnerabilities

- [CVE-2026-103866: Apache Sling Engine HTTP request smuggling](https://junglewise.ai/threats/cve-2026-103866-inconsistent-interpretation-of-http-requests-http-request) (info, published 5 Nov 2026)
- [CVE-2026-103864: Apache Sling Engine improper output neutralization in logs](https://junglewise.ai/threats/cve-2026-103864-improper-output-neutralization-for-logs-in-apache-sling-engine) (info, published 5 Nov 2026)
- [CVE-2026-103863: Apache Sling Engine cross-site scripting in header handling](https://junglewise.ai/threats/cve-2026-103863-improper-neutralization-of-input-during-web-page-generation) (info, published 5 Nov 2026)

## Most severe Apache Sling Engine vulnerabilities

- [CVE-2026-103866: Apache Sling Engine HTTP request smuggling](https://junglewise.ai/threats/cve-2026-103866-inconsistent-interpretation-of-http-requests-http-request) (info, published 5 Nov 2026)
- [CVE-2026-103864: Apache Sling Engine improper output neutralization in logs](https://junglewise.ai/threats/cve-2026-103864-improper-output-neutralization-for-logs-in-apache-sling-engine) (info, published 5 Nov 2026)
- [CVE-2026-103863: Apache Sling Engine cross-site scripting in header handling](https://junglewise.ai/threats/cve-2026-103863-improper-neutralization-of-input-during-web-page-generation) (info, published 5 Nov 2026)

## Vulnerabilities per week

3 vulnerabilities in the last four weeks, up from none in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 3 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Apache technologies

- [Apache Airflow](https://junglewise.ai/threats/technologies/airflow): 95 vulnerabilities
- [Apache Camel](https://junglewise.ai/threats/technologies/camel): 87 vulnerabilities
- [Apache Tomcat](https://junglewise.ai/threats/technologies/tomcat): 87 vulnerabilities
- [Apache Thrift](https://junglewise.ai/threats/technologies/thrift): 77 vulnerabilities
- [Apache Ofbiz](https://junglewise.ai/threats/technologies/ofbiz): 67 vulnerabilities
- [Apache HTTP Server](https://junglewise.ai/threats/technologies/http-server): 62 vulnerabilities
- [Apache Traffic Server](https://junglewise.ai/threats/technologies/traffic-server): 55 vulnerabilities
- [Apache Brpc](https://junglewise.ai/threats/technologies/brpc): 36 vulnerabilities
- [Apache Roller](https://junglewise.ai/threats/technologies/roller): 30 vulnerabilities
- [Apache CloudStack](https://junglewise.ai/threats/technologies/cloudstack): 28 vulnerabilities
- [Apache ActiveMQ](https://junglewise.ai/threats/technologies/activemq): 27 vulnerabilities
- [Apache Apisix](https://junglewise.ai/threats/technologies/apisix): 27 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Apache Sling Engine vulnerabilities", https://junglewise.ai/threats/technologies/sling-engine, 13 November 2026.